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Hayabusa Captured its Home Earth!

Hayabusa successfully photographed its home Earth and Moon on May 12th last week, by using the CCD sensor on the Star Tracker instrument aboard.

The Earth was seen so brightly that the image contained strong smear in it, but the image clearly separates the Moon from the Earth. (Magnitude of the Earth is -8.3, and that of Moon is -4.6.)

The Earth was seen between Sagittarius and Capricornus.
Hayabusa will continue to voyage back to Earth at the speed of 18 thousand kilometer per hour.

Imaging Geometry in Ecliptic

Hayabusa Trajectory in Sun-Earth Coordinate

Hayabusa Trajectory in Sun-Earth Coordinate

Smear, Blooming and Defocusing Effect

Earth was seen between Sagittarius and Capricornus.

Raw Image with Stars and Constellations/Raw  STT Image

Negative Image with Stars and Constellations

May 17, 2010